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The number of books in the bookshop ________ (be) about 10,000 and most of them are about science.
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水果店有水果750千克,今天上午卖出284千克,下午卖出325千克.今天一共卖出水果多少千克?还剩多少千克?
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自行车制造厂如果每天生产自行车180辆,10天完成,如果每天比原计划多生产20辆,几天可以完成?
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He didn't tell me ______ the exhibition was held. [ ]
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医生们正在努力寻找废墟下的人 Doctors are trying to_______people under buildings.
1年前